编译firefox 不可以使用-O3吗？

yanu

make.conf 里设置了-O3，
但是编译firefox的时候看make的输出，还是用的-O2啊，是我哪里设置的不对？

make.conf:
[PHP]# These settings were set by the catalyst build script that automatically built this stage
# Please consult /etc/make.conf.example for a more detailed example
#CFLAGS="-O3 -march=athlon-xp -fomit-frame-pointer"
CFLAGS="-O3 -march=athlon-xp -fomit-frame-pointer -ftracer -fprefetch-loop-arrays -pipe"
CHOST="i686-pc-linux-gnu"
#CXXFLAGS="${CFLAGS}"
CXXFLAGS="${CFLAGS} -fvisibility-inlines-hidden"
#FETCHCOMMAND='/usr/bin/proz --no-getch -s ${URI} -P ${DISTDIR}'
MAKEOPTS="-j2"
USE="-xmms -kde cjk -ipv6 "
#GENTOO_MIRRORS="ftp://ftp.tsinghua.edu.cn/OS/Linux/distribution/gentoo"
GENTOO_MIRRORS="http://gentoo.gg3.net/"
SYNC="rsync://ftp.tsinghua.edu.cn/gentoo/gentoo-portage"
#SYNC="rsync://mirror.gentoo.gr.jp"
#SYNC="rsync://radio.lzusiyu.org/gentoo"
#RSYNC_PROXY="202.105.135.99:3128"
~[/PHP]

sunmoon1997

remove -fvisibility-inlines-hidden from cxxflags and try again

younker

don't use -O3 for Mozilla series.